#ifndef __KEY_SCAN_H
#define __KEY_SCAN_H

#include "main.h"

#define KEY1  PBin(4)
#define KEY2  PBin(3)
#define KEY3  PAin(0)

#define KEY1_PRES    0x40
#define KEY2_PRES    0x41
#define KEY3_PRES    0x42

int key_scan(void);


#endif

